Improve GLSL integer support

src/gpu/GrCaps.cpp

Index: src/gpu/GrCaps.cpp
diff --git a/src/gpu/GrCaps.cpp b/src/gpu/GrCaps.cpp
index 46f49357c77d4d6fd09a25a63ff4a03ac606f99f..2568e567fc5926b71d58d487d878f46e56a74980 100644
--- a/src/gpu/GrCaps.cpp
+++ b/src/gpu/GrCaps.cpp
@@ -15,6 +15,7 @@ GrShaderCaps::GrShaderCaps() {
     fPathRenderingSupport = false;
     fDstReadInShaderSupport = false;
     fDualSourceBlendingSupport = false;
+    fIntegerSupport = false;
     fShaderPrecisionVaries = false;
 }
 
@@ -50,6 +51,7 @@ SkString GrShaderCaps::dump() const {
     r.appendf("Path Rendering Support             : %s\n", gNY[fPathRenderingSupport]);
     r.appendf("Dst Read In Shader Support         : %s\n", gNY[fDstReadInShaderSupport]);
     r.appendf("Dual Source Blending Support       : %s\n", gNY[fDualSourceBlendingSupport]);
+    r.appendf("Integer Support                    : %s\n", gNY[fIntegerSupport]);
 
     r.appendf("Shader Float Precisions (varies: %s):\n", gNY[fShaderPrecisionVaries]);